Vacuum cleaner receptacle



2 Sheets-Sheet 1 W. P. HUNSDORF VACUUM CLEANER RECEPTACLE Original Filed Sept. 30, 1950 July 14, 1936.

July 14, 1936 W. P, HuNsDoRF 2,047,735

VACUUM CLEANER RCEPTACLE Original Filed Sept. 30, 1930 2 Sheets-SheetI 2 connection betweenthe outer surface of the lower end portion 2| of the tube is formed by clamping the neck 3b of the bag around said lower end portion 2l as by means of a constriction clamp 24 having an operating lever 25 and a conventional dust tight connection.

In the operation of the device, the Abar is attached to the cleaner by rst inserting the noncollapsible tube I9 through the neck of the bag into the trap ID, and thence clamping the neck of the bag by means of the clamp 24 on the lower end of the tube. The coupling I5 is then coupled tothe exhaust of the vacuum cleaner and the spring 9 is hooked to the handle of thecleaner, whereupon the cleaner is ready for operation. It will be noted that the upper end Illa of the trap projects a substantial distance beyond the noncollapsible tube I9 so as to form a trap valve to prevent any dust dropping back down the tube after the operation of the cleaner has been stopped. At the same time, the trap I0 over the major portion of its length, is maintained in a distended position by the non-collapsible tube so thatv the accumulation of litter in the collecting bag 3a may not constrict the pasageway through the trap by pressing the side walls thereof together. Without the non-collapsible tube, the side walls of the trap would be so pressedtogether by the collected litter that when the bag became half full the suction of the cleaner would be very seriously impaired by such pressure.

The portion Illa projecting beyond the tube I5 is of such shortness that it forms no resistance to the passage of litter therethrough being maintained fully distended by the air current.

It will be understood that the trapping action n of the trap tube I 0 is due to formation of an annular pocket between it and the walls of the bag, in which refuse'delivered from its uuper end is trapped. Its lower end completely seals the neck of the bag against anyv dirt' escaping therethrough. As long as the level of the collected refuse does not rise above the level of its upper end, it functions to prevent any dirt dropping back into the fan case when the poweris shut off, irrespective of the valve action of its projecting unsupported upper end portion. Accordingly, the trap tube may be of the same length as, or slightly shorter than, the non-collapsible tube, without departing from the invention.

It is to be noted that the non-collapsible tube is connected to the bag only at the neck and remains free to slide longitudinally within the trap III in conformity to thebending of the trapand tube as the cleanei\handle is moved up and down. A certain amount of such relatively longitudinal movement will occurl during such bending, and if the tube and trap were rigidly connected during their whole length, this would create a resistance to the sexing of the bag which woid be injurious to the bag.

A peculiar characteristic of the non-collapsible.

tributed into the body portion of the bag, which can stand such flexing with much greater ease than the constricted neck thereof. Furthermore, the non-collapsible tube entirely prevents any sharp bending in the bag which would weaken the 5 paper so as to allow rupture to occur.

The non-collapsible tube functions to constrain the bag to bend in a broad curve. owing to the fact that the upper region of the trap III will engage the upper region of the tube I9 as the bag is 10 lifted by- -the handle. and thereby flex the tube I 9 upwardly along with the bag, and the bag will thereby flex in unison with the tube.

It may be further noted that the trap II) prevents the accumulating litter from. settling 15 against the sides of the non-collapsible' tube. Thus the latterr which is removed from successive paper bags as the latter are filled and thrown away, and used over and over again, is kept clean and free from any accumulationof dirt on the 20 outside which would be distasteful to the housewife. In addition, the protection of the tube against becoming embedded in the collected litter avoids any possibility of difficulty of removal of the tube from the bagby reason of its being em- 25 bedded in such litter.

The successive layers of paper in the bag, from one side to the other, are indicated'in Fig. 2 by the reference characters 3c, 3d, 3e and 3f.

A further advantage which may be noted with 30 4respect to the invention is this: The dust is projected int`o the bag in the upper region thereof so that the accumulation of litter in the lower region of the bag does not in any way interfere with theprojection of the material into the bag. 3 Only when the bag has become filled to the top will there be any tendency for the litter to obstruct the discharge of additional litter into the bag.

I claim as my invention: j

1.l In a vacuum cleaner having a discharge duct and a handle, the combination with said discharge duct of a porous paper bag having a neck connected to said discharge duct and suspended from the handle. a trap of flexible material inside of said bag communicating with the neck thereof and extending to a substantial height within the bag,'and a flexible non-collapsible tube also connected to said discharge duct and extending upwardly within said trap to a point adjacent the upper end thereof, said tube' being connected to said trap at the neck of the bag only and withdrawable therefrom.

2. In a vacuum cleaner having a discharge duct and a'handle, the combination with :said discharge duct of a porous paper bag having a neck connected to said discharge duct and suspended from the handle, a trap of flexible material inside of said bag communicating with the neck thereof and extending a substantial 60 distance into the bag, and a ilexible non-collapsible tube also connected to said discharge duct and extending upwardly within said trap a major portion of the length thereof, said tube being unconnected to said trap except at the neck of C5 the bag and serving to distribute the major portion of any flexing that may be enforced upon the bag into the body region of the bag through the' medium of said trap. 7

3. In a vacuum/ cleaner having a discharge duct and a handle. the combination with `said discharge duct of a non-collapsible flexible tube the lower end of which is detachably connected to said duct, a porous paper bag having aufn-f 75,

ternal longitudinal trap o! flexible material terminating at the lower end of the bag-in a neck and receiving said tube, both tube and trap ex-l tending to a-very substantial height within the bag, means connecting the neck oi?L the bag in a vdust tight t around the lower portion of the tube.

4. In a vacuum cleaner having a discharg duct and a handle, the combination with said discharge duct of a non-collapsible flexible tube the lower end of which is detachably connected to said duct, a porous paper bag having an internal longitudinal trap of flexible material terminating at the lower end of the bag in a neck and receiving said tube, both tube and trap extending to a very substantial height within the bag, "means connecting the neck of the bag in a dust tight fit around the lower portion of the tube, said tube and trap being unconnected except at said lower end. V

5. A dust receptacle for cleaners having at one y end a neck for'attachment to a cleaning device,

, tion, a dust trap formed of exible materialA each wall of said receptacle and neck comprising inner and outer related paper blanks, the marginal portions of said blanks along their side edges being in engagement and venclosed in a reinforcing binding strip and said strip and said portions being connected in sealed relation', and a dust trap formedof flexible material disposed between said inner blanks and extending at its outer end into said neck, said trap extending into said receptacle to a point remote from said neck and havingits louter longitudinal side secured to the adjacent connected marginal'portions of said blanks to support it-axially of said neck and the'material of said dust 'trap being extended through said neck and folded back into engagement with and secured to the exterior walls thereof.

' 6. A dust receptacle for vacuum cleaners having at one end a neck for attachment to a cleaning device, each wall of said receptacle and neck comprising inner and outer related paper blanks, the marginal portions of said blanks alongv their side edges being in engagement and enclosed in a reinforcing vbinding strip and said strip and said portions being connected in sealed relahaving its outer longitudinal side secured to the adjacent connected marginal portions of said blanks to support said trap axially of said neck, and a non-collapsible iiexible tube within said dust trap, one end of said .tube fitting into said `neck and adapted to removably engage an at taching element and the other end of the tube terminating within but adjacent the inner end of said dust trap.

7. A dust receptacle for vacuum cleaners having at one end a/neck for attachment to a cleaning device, each wall of said receptacle and neck comprising inner and outer related paper blanks,

4 the marginal` portions of said blanks along their side edges being in engagement and enclosed in a reinforcing binding strip and said strip andl portions being connected, and a dust trap formed of a, flexible material disposed between 4the inner blanks and having one end extending into said "neck, said trap extending'from said neck into said receptacle to a, `point remote therefrom and ylength, thereof, said tube serving to distribute the having its outer longitudinal-side secured to the adjacent connected marginal portions of said blanks, a non-collapsible iiexible tube within and extending longitudinally of said dust trap, one end of said tube terminating in an expansible 5 collar arranged to frictionally engage the wall of an attaching device, and means for securing said neck and collar to the attaching device.

. 8. A dust receptacle for vacuum cleaners having at one end a neck for attachment to a clean- 10 ing device, each wall of said receptacle and neck' comprising inner and outer related paper blanks,

the marginal portions of said blanks along their side edges vbeing in engagement and enclosed in a reinforcing `binding strip and said strip and 15 said portions 'being connected in sealed relation, a dust trap formed of flexible material disposed between the inner blanks and 4extending at its outer end into said neck, said trap extending into said receptacle to a. point remote from said neck 20 and having its outer longitudinal side secured to the adjacent connected marginal portions of said blanks, and a non-collapsible exibletube within said dust trap, one end of said ltube fitting into said neck and adapted to removably engage an 25 attaching element and the other end of the tube terminating within but adjacent the inner end of said dust trap, said tube throughout its length serving to reinforce said receptacle and dust trap.

9; In a vacuum cleaner having a discharge duct 30 and a handle, the combination with said discharge duct of a porous paper bag" having a neck connected to said discharge duct and suspended from the handle, a trap of flexible material inside of said bag communicating with the neck thereof 35 and extending to a substantial height within the bag, and a flexible non-collapsible tube also connected to said discharge duct and extending upwardly within said trap a major portion of the 4o major portion of any flexing .that may be enforced upon the bag into the body region of the bag.

10. In a vacuum cleanerhaving adischarge duct and ahandle, the combination with said duct of a porous paper bag suspended from the handle and having a neck receiving the discharge from-said duct, a freely iiexible noncollapsible tube connected at one endto said duct and ex- Y tending a substantialdistance into the bag, andA means attached to the bag and adapted to engage said tube at a' distance from the duct, when said bag is raised'by saidhandle and to thereby flex said tube upwardly whereby said bag is con-- strained toflex in a broad curve. in unisonv with said tube, and sharp bending at the neck 55 4 avoided.

11. In a vacuum cleaner having a discharge duct and a handle. the combination with said duct of a porous paper bag suspended 'from the' handle and having a neck connected to said duct. a trap of limp, flexible material, incapable in itself of remaining distended underthe collapsing pressure of accumulated refuse surrounding it,` said trap communicating with the neck of the bag and extending to a substantial height therein, and a flexible non-collapsible tube also connected .to said disch rge duct, extending upwardly within said trap to a point 'adjacent the upper end thereof. and serving to hold at least a major portion [of-said trap in 'distended'conditiom said 'tube 70 r-being withdrawable from the trap. 

